The key difference between Vis™ Divide and standard high-density polyethylene (HDPE) conduit is Vis Divide’s fabric divider that segments the conduit. This fabric divider allows more than one cable to be installed within the same conduit — and often makes engineers and installers question the ease of coupling Vis Divide.  

Even with the fabric divider, coupling Vis Divide is no different from coupling a standard HDPE conduit.

Equipment required

Coupling Vis Divide doesn’t require any special equipment or couplers; standard couplers work perfectly. We recommend using a fabric Kellums grip to install the cable. A Kellums grip is a standard piece of equipment that most installers will have readily available.  

Coupling process

Vis Divide comes with Vis™ Tape pre-installed in all available cells to help eliminate one extra step for installers. The pull tape is the only additional consideration that needs to be taken when coupling Vis Divide. Here’s the complete process:

  • Make sure the pull tapes aren’t crossed, then tie them together. A blood knot is recommended.
  • Install a standard HDPE coupler that matches the Vis Divide size.
  • Use a fabric Kellums grip to pull the cable through the Vis Divide conduit.

Coupling Vis Divide

Testing results

Durability tests aren’t the only tests we performed on Vis Divide — we also performed several coupling tests. We needed to make sure the cable could be pulled in through a coupled conduit without snagging or hanging up on the fabric. We also wanted to be certain the fabric would continue to provide cable protection and maintain its dedicated pathway.

During the testing process, we cut a 1,000-foot piece of Vis Divide into four segments and then coupled them back together with three off-the-shelf standard couplings. Cables were installed in the conduit in multiple pulls. We repeated this process many times.

For most of the tests, we allowed the fabric divider to line up by chance, to replicate a typical installation, but during some of the tests, we intentionally attempted line up the dividers in a crosshair formation. This formation was a difficult task to achieve, but we wanted to make sure a cable can be installed in even the most challenging circumstance.

In all the tests we performed on Vis Divide coupling, even the crosshair formation, we found that the fabric moves out of the way, opening up to the full diameter of the conduit. Because the innerduct fabric is so accommodating, Vis Divide can be coupled as simply as a standard HDPE conduit.

Real-world coupling

See how easy it is to couple Vis Divide in this case study of a 2,038-foot cable pull.